I have a Nextjs web app with Firebase Auth. I only allow my users to login with Google.
All my traffic is coming from social media apps which have an embedded browser. So on launch day I learned that signing in only works directly from a browser like chrome or safari but not within a webview within an application. This is a nightmare.
I tried switching from signInWithPopUp() to signInWithRedirect(), but still same issue.
error 403: disallowed_useragent
This app doesn't comply with Googles webview policy.
Has anyone encountered this problem?